JSON-LD (JavaScript Object Notation for Linked Data) is a lightweight format recommended by Google for encoding structured data. It is delivered as a block inside a page's HTML and uses schema.org vocabulary to describe the page content to search engines.

Schema Markup Generator - Build JSON-LD Structured Data Online

Create valid JSON-LD structured data for your web pages in seconds with our free online Schema Markup Generator. Choose from Article, Product, FAQ, HowTo, LocalBusiness, Organization, Person, and BreadcrumbList schema types, fill in a simple form, and copy production-ready structured data straight into your HTML - no signup and no uploads.

Schema markup (structured data) is the language search engines like Google use to understand what your content is about. Adding JSON-LD markup makes your pages eligible for rich results - review stars, FAQ accordions, product snippets, recipe cards and breadcrumb trails - which can significantly increase click-through rates. Our generator, also called a structured data generator or JSON-LD generator, outputs the schema.org vocabulary recommended by Google, formatted and indented for easy reading.

Everything runs in real time inside your browser. As you type, the JSON-LD output updates instantly and automatically strips out empty fields so the result is always clean and valid. Pair the generated markup with tags from the Meta Tag Generator and a robots.txt for a complete SEO foundation.

JSON-LD Example: Before & After

Here is a FAQ page described in plain words, and the same information encoded as valid JSON-LD structured data ready for Google Rich Results.

Input (your content):

Q: Do you offer free shipping?
A: Yes, on all orders over $50.

Q: How long is the warranty?
A: Every product includes a 2-year warranty.

Output (FAQPage JSON-LD):

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "FAQPage",
  "mainEntity": [
    {
      "@type": "Question",
      "name": "Do you offer free shipping?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Yes, on all orders over $50."
      }
    },
    {
      "@type": "Question",
      "name": "How long is the warranty?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Every product includes a 2-year warranty."
      }
    }
  ]
}
</script>

Paste that block into your page and search engines can render the questions as expandable FAQ rich results. The generator handles the nesting, the @context and @type declarations, and the escaping for you.

How to Use the Schema Markup Generator

Pick a schema type: choose Article, Product, FAQ, HowTo, LocalBusiness, Organization, Person, or BreadcrumbList from the dropdown - the form adapts to show only the relevant fields.
Fill in the fields: enter the headline, name, description, dates, prices, or addresses that apply. Leave anything you don't need blank and it is automatically omitted from the output.
Add repeating items: for FAQ, HowTo, and BreadcrumbList schemas, use the add and remove buttons to add as many questions, steps, or crumbs as you need.
Watch the live output: the JSON-LD updates on the right in real time as you type, indented and wrapped in a <script type="application/ld+json"> block.
Copy or download: click Copy to copy the markup, or Download to save it as a file.
Paste and validate: paste the block into your page's <head>, then test it with the Google Rich Results Test before publishing.

Key Features

Eight schema types: Article, Product, FAQPage, HowTo, LocalBusiness, Organization, Person, and BreadcrumbList cover the most common rich results.
Valid JSON-LD output: every block includes the correct @context and @type so search engines parse it reliably.
Dynamic form fields: the form shows only the fields relevant to the selected schema type, so the UI stays focused.
Repeatable items: add unlimited FAQ questions, HowTo steps, and breadcrumb entries with one click.
Clean, empty-field stripping: blank fields and empty nested objects are removed automatically so the output is never cluttered.
Live preview: the structured data regenerates instantly as you type - no Generate button needed.
Copy and download: copy the script block to your clipboard or download it as a file in one click.
100% private: everything runs in your browser - nothing is uploaded or stored.

Common Use Cases

Blog and news articles: add Article markup with author, datePublished, and publisher so Google can show the byline and publish date in results.
E-commerce products: use Product markup with offers, price, currency, availability, and aggregateRating to earn review stars and price snippets.
Support and FAQ pages: turn a list of questions into FAQPage markup to capture FAQ rich results and People-Also-Ask traffic.
Tutorials and recipes: describe each step with HowTo markup to appear in step-by-step rich results.
Local businesses: add LocalBusiness markup with address, phone, opening hours, and price range for local search prominence.

About Schema Markup and JSON-LD

Schema markup is structured data that describes your page content to search engines using a shared vocabulary. The vocabulary is maintained by schema.org, a collaborative project founded by Google, Microsoft, Yahoo, and Yandex. By adding schema markup, you give search engines explicit, machine-readable facts about your content - that this page is an Article, that this price is $19.99, that this address belongs to a local business - which they use to build rich, enhanced search results beyond the standard blue link.

JSON-LD (JavaScript Object Notation for Linked Data) is the format Google recommends for delivering that structured data. Unlike older approaches, JSON-LD keeps all the markup inside a single self-contained <script type="application/ld+json"> block, completely separate from your visible HTML. This separation makes JSON-LD far easier to author, read, and maintain, and it avoids the fragile inline attributes required by alternatives like Microdata and RDFa.

JSON-LD Structure & Syntax

A JSON-LD block is just a JSON object with two special keys. @context points to https://schema.org to declare the vocabulary, and @type names the thing you are describing. Every other property maps to a schema.org field.

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Article",
  "headline": "Understanding Structured Data",
  "author": {
    "@type": "Person",
    "name": "Ada Lovelace"
  }
}
</script>

Properties can hold simple values (strings, numbers, booleans), arrays for lists of items, or nested objects for things that have their own @type, such as an author, an offer, or a postal address.

Supported Schema Types

The generator focuses on the schema types that unlock the most common rich results:

Article: news, blog posts, and long-form content - powers headline and date rich results.
Product: commerce pages with offers, price, and aggregate rating - powers product and review snippets.
FAQPage: question-and-answer content - powers FAQ accordion rich results.
HowTo: step-by-step instructions and recipes - powers HowTo rich results.
LocalBusiness: physical stores and services - powers local business knowledge panels.
Organization: company information with logo and social profiles - powers organization panels.
Person: author or individual profiles - powers person knowledge panels.
BreadcrumbList: site navigation trails - powers breadcrumb rich results.

JSON-LD vs Microdata vs RDFa

There are three ways to add schema.org markup. JSON-LD keeps markup in a separate JSON block - Google's recommended approach and the easiest to manage. Microdata and RDFa embed attributes directly inside your HTML tags, which mixes presentation with semantics and is harder to maintain. Because all three use the same schema.org vocabulary, the generator standardizes on JSON-LD so you get the best-supported, cleanest output. Once you have valid structured data, validate your meta tags and clean URL slugs to round out your on-page SEO.

Common Schema Markup Errors & How to Fix Them

Missing required field: Google flags required properties like name or headline. Fill in every field marked required for your schema type and re-test.
Invalid JSON (trailing comma): JSON-LD is strict JSON - no trailing commas after the last property. The generator emits valid JSON, but if you hand-edit, remove trailing commas.
Wrong script type: the block must use type="application/ld+json". Using type="text/javascript" makes search engines ignore it entirely.
Relative image URLs: schema image and logo values should be absolute URLs (https://...). Relative paths are rejected by most validators.
Nested object without @type: objects like author or offers need their own @type (for example, Person or Offer). The generator adds these automatically.
Markup not showing rich results: valid markup only makes you eligible; Google decides whether to display it. Ensure your content matches the schema and your site meets quality guidelines.

Related SEO Tools

Schema markup works best as part of a complete SEO setup. These companion tools cover the rest of your on-page optimization:

Meta Tag Generator - create title, description, Open Graph, and Twitter Card tags for the same pages.
Robots.txt Generator - control crawler access with allow/disallow rules and a sitemap directive.
URL Slug Generator - build clean, keyword-rich slugs for the URLs you mark up.
Character Count - keep your titles and descriptions within SEO length limits.

Frequently Asked Questions

1What is JSON-LD?

JSON-LD (JavaScript Object Notation for Linked Data) is a lightweight format recommended by Google for encoding structured data. It is delivered as a <script type="application/ld+json"> block inside a page's HTML and uses schema.org vocabulary to describe the page content to search engines.

2What is schema markup and why does it matter?

Schema markup is structured data that tells search engines what your content means, not just what it says. Adding valid schema markup makes your pages eligible for rich results like review stars, FAQ accordions, recipe cards and product snippets, which can improve visibility and click-through rates.

3Where do I paste the generated JSON-LD?

Paste the <script type="application/ld+json"> block inside the <head> or <body> of your HTML page. Google reads JSON-LD from anywhere in the document, so placement is flexible, but the <head> is the most common location.

4Is the generated structured data sent to a server?

No. All generation happens entirely in your browser. Your content never leaves your computer, so it remains completely private.

5Which schema types does the generator support?

The generator supports Article, Product, FAQPage, HowTo, LocalBusiness, Organization, Person and BreadcrumbList. These cover the most common rich-result features available in Google Search.

6Does schema markup guarantee rich results?

No. Valid markup makes your page eligible for rich results, but Google decides whether to show them based on quality, relevance and its guidelines. Always test your markup with the Google Rich Results Test before publishing.

7What is the difference between JSON-LD and Microdata?

JSON-LD is a separate JSON script block that keeps markup out of your visible HTML, while Microdata embeds schema attributes directly inside HTML tags. Google recommends JSON-LD because it is easier to maintain and less error-prone.

8How do I validate the generated JSON-LD?

After copying or downloading the output, paste the JSON-LD into the official Google Rich Results Test or Schema Markup Validator. They will report any missing required fields or syntax errors so you can fix them before publishing.

9Can I use multiple schema types on one page?

Yes. You can include several JSON-LD blocks on a single page, or nest them using @graph. For example, an article page often includes both Article and BreadcrumbList markup as separate script blocks.